This is a fantastic article by Kathy Freston explaining, in a
scientific sound manner, why humans are not meant to eat animals. She
says our digestive system is better adapted to a plant-based diet and
that very well-known experts in the areas of medicine, anthropology
and paleontology agree that humans evolved to eat very little or no
meat.

Our loving Creator must have designed our bodies in a manner that
we didn’t need to hurt or kill His/Her creatures in order to live a
joyful and healthy life. Since we need to eat every day (or nearly
so!), making the decision about what diet to adopt could mean healing
and restoration or pain and devastation. I think the choice is clear.